作者:Ryoichi Kuwano、Yuta Hashiguchi、Ryuhei Ikeda、Kentaro Ishizuka
DOI:10.1002/anie.201410607
日期:2015.2.16
The asymmetric hydrogenation of pyrimidines proceeded with high enantioselectivity (up to 99 % ee) using an iridium catalyst composed of [IrCl(cod)]2, a ferrocene‐containing chiral diphosphine ligand (Josiphos), iodine, and Yb(OTf)3 (cod=1,5‐cyclooctadiene). The chiral catalyst converted various 4‐substituted pyrimidines into chiral 1,4,5,6‐tetrahydropyrimidines in high yield. The lanthanide triflate
嘧啶的不对称氢化以高对映选择性(高达99%进行 ee值使用的[的IrCl(COD)]组成的铱催化剂)2,含二茂铁的手性二膦配体(Josiphos),碘,和Yb(OTF)3( cod = 1,5-环辛二烯)。手性催化剂以高收率将各种4-取代的嘧啶转化为手性的1,4,5,6-四氢嘧啶。镧系元素三氟甲磺酸盐对于实现高对映选择性以及活化杂芳烃底物至关重要。